LSCF-SDC core-shell high-performance durable composite cathode

被引：53
作者：
Lee, Seungho [1 ]
Song, Hwa Seob [1 ]
Hyun, Sang Hoon [1 ]
Kim, Joosun [2 ]
Moon, Jooho [1 ]
机构：
[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea
[2] Korea Inst Sci & Technol, Ctr Energy Mat Res, Seoul 136791, South Korea
来源：
JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 01期
关键词：
Cathode; Durability; Composite; Core-shell particles; Solid oxide fuel cell; IMPEDANCE;
D O I：
10.1016/j.jpowsour.2009.06.079
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Core-shell type La0.6Sr0.4Co0.2Fe0.8O3-d (LSCF)-Sm0.2Ce0.8O2-d (SDC) powders are synthesized to achieve a high-performance durable cathode for intermediate temperature solid oxide fuel cells (IT-SOFCs). The SDC core size is controlled so that all core particles are surrounded by the LSCF particles with no unattached spots. Such a core-shell composite cathode develops an ideal microstructure with improved phase contiguity, homogeneity, and maximized triple-phase boundary density. The cathode that involves an SDC core of 500 nm exhibits the lowest interfacial polarization resistance (0.265 Omega cm(2) at 650 degrees C), as well as long-term stability during both thermo-cyclic and electrochemically accelerated tests. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：118 / 123
页数：6
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共 15 条
  • [1] Detailed characterization of anode-supported SOFCs by impedance spectroscopy
    Barfod, Rasmus
    Mogensen, Mogens
    Klemenso, Trine
    Hagen, Anke
    Liu, Yi-Lin
    Hendriksen, Peter Vang
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (04) : B371 - B378
  • [2] Electrochemical characteristics of LSCF-SDC composite cathode for intermediate temperature SOFC
    Fu, Changjing
    Sun, Kening
    Zhang, Naiqing
    Chen, Xinbing
    Zhou, Derui
    [J]. ELECTROCHIMICA ACTA, 2007, 52 (13) : 4589 - 4594
  • [3] Microstructure control of SOFC cathodes using the self-organizing behavior of LSM/ScSZ composite powder material prepared by spray pyrolysis
    Hagiwara, Akifusa
    Hobara, Natsuro
    Takizawa, Koichi
    Sato, Kazuyoshi
    Abe, Hiroya
    Naito, Makio
    [J]. SOLID STATE IONICS, 2007, 178 (15-18) : 1123 - 1134
  • [4] A method to separate process contributions in impedance spectra by variation of test conditions
    Jensen, Soren Hojgaard
    Hauch, Anne
    Hendriksen, Peter Vang
    Mogensen, Mogens
    Bonanos, Nikolaos
    Jacobsen, Torben
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (12) : B1325 - B1330
  • [5] Impedance of solid oxide fuel cell LSM/YSZ composite cathodes
    Jorgensen, MJ
    Mogensen, M
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (05) : A433 - A442
  • [6] Performance/structure correlation for composite SOFC cathodes
    Juhl, M
    Primdahl, S
    Manon, C
    Mogensen, M
    [J]. JOURNAL OF POWER SOURCES, 1996, 61 (1-2) : 173 - 181
  • [7] Interlayer-free nanostructured La0.58Sr0.4Co0.2 Fe0.8O3-δ cathode on scandium stabilized zirconia electrolyte for intermediate-temperature solid oxide fuel cells
    Lee, Seungho
    Song, Hwa Seob
    Hyun, Sang Hoon
    Kim, Joosun
    Moon, Jooho
    [J]. JOURNAL OF POWER SOURCES, 2009, 187 (01) : 74 - 79
  • [8] Fabrication of Sm0.5Sr0.5CoO3-δ-Sm0.1Ce0.9O2-δ cathodes for solid oxide fuel cells using combustion CVD
    Liu, Y
    Rauch, W
    Zha, SW
    Liu, ML
    [J]. SOLID STATE IONICS, 2004, 166 (3-4) : 261 - 268
  • [9] Trichinellosis: Now and forevermore?
    Murrell, KD
    [J]. PARASITE, 2001, 8 (02) : S11 - S13
  • [10] Silver infiltrated La0.6Sr0.4Co0.2Fe0.8O3 cathodes for intermediate temperature solid oxide fuel cells
    Sakito, Y.
    Hirano, A.
    Imanishi, N.
    Takeda, Y.
    Yamamoto, O.
    Liu, Y.
    [J]. JOURNAL OF POWER SOURCES, 2008, 182 (02) : 476 - 481
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